Is J4A a billable code?
No. J4A is a header code that groups 3 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
J4A: Chronic lung allograft dysfunction
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
J4A groups related diagnoses under chronic lung allograft dysfunction. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
J4A questions
What does J4A mean?
J4A is the ICD-10-CM code for Chronic lung allograft dysfunction. It is in chapter 10, Diseases of the respiratory system (J00-J99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.